/**
 * UGENE - Integrated Bioinformatics Tools.
 * Copyright (C) 2008-2020 UniPro <ugene@unipro.ru>
 * http://ugene.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
 * MA 02110-1301, USA.
 */

#ifndef _U2_IMAGE_EXPORT_TASK_H
#define _U2_IMAGE_EXPORT_TASK_H

#include <QSize>

#include <U2Core/Task.h>
#include <U2Core/global.h>

#define IMAGE_SIZE_LIMIT 32768

namespace U2 {

class U2GUI_EXPORT ImageExportTaskSettings {
public:
    ImageExportTaskSettings(const QString &fileName = QString(),
                            const QString &format = QString(),
                            const QSize &size = QSize(),
                            const int quality = -1,
                            const int dpi = 96);

    bool isBitmapFormat() const;
    bool isSVGFormat() const;
    bool isPDFFormat() const;

    QString fileName;
    QString format;
    QSize imageSize;
    int imageQuality;
    int imageDpi;

    static const QString SVG_FORMAT;
    static const QString PS_FORMAT;
    static const QString PDF_FORMAT;
};

class U2GUI_EXPORT ImageExportTask : public Task {
    Q_OBJECT
public:
    ImageExportTask(const ImageExportTaskSettings &settings);
    virtual void run() = 0;
    ReportResult report();

protected:
    ImageExportTaskSettings settings;
    QString WRONG_FORMAT_MESSAGE;
    QString EXPORT_FAIL_MESSAGE;
};

enum ExportImageFormatFlag {
    EnableRasterFormats = 1,
    SupportSvg = 2,
    SupportPsAndPdf = 4
};

typedef QFlags<ExportImageFormatFlag> ExportImageFormatPolicy;

#define ExportImageFormatPolicy_SupportAll ExportImageFormatPolicy(EnableRasterFormats | SupportSvg | SupportPsAndPdf)

class U2GUI_EXPORT ImageExportController : public QObject {
    Q_OBJECT
public:
    ImageExportController(const ExportImageFormatPolicy &fPolicy = ExportImageFormatPolicy(EnableRasterFormats));

    Task *getTaskInstance(const ImageExportTaskSettings &settings) const;

    const QString &getExportDescription() const {
        return shortDescription;
    }
    QWidget *getSettingsWidget();

    virtual int getImageWidth() const {
        return 0;
    }
    virtual int getImageHeight() const {
        return 0;
    }

    bool isRasterFormatsEnabled() const {
        return formatPolicy.testFlag(EnableRasterFormats);
    }
    bool isSvgSupported() const {
        return formatPolicy.testFlag(SupportSvg);
    }
    bool isPdfSupported() const {
        return formatPolicy.testFlag(SupportPsAndPdf);
    }

    bool isExportDisabled() const {
        return !disableMessage.isEmpty();
    }
    QString getDisableMessage() const {
        return disableMessage;
    }

public slots:
    virtual void sl_onFormatChanged(const QString &) {
    }

signals:
    void si_disableExport(bool);
    void si_showMessage(const QString &);

protected:
    virtual void initSettingsWidget() = 0;

    virtual Task *getExportToSvgTask(const ImageExportTaskSettings &) const {
        return NULL;
    }
    virtual Task *getExportToPdfTask(const ImageExportTaskSettings &) const {
        return NULL;
    }
    virtual Task *getExportToBitmapTask(const ImageExportTaskSettings &) const {
        return NULL;
    }

    QWidget *settingsWidget;
    QString shortDescription;
    QString disableMessage;
    ExportImageFormatPolicy formatPolicy;
};

}    // namespace U2

#endif    // _U2_IMAGE_EXPORT_TASK_H
